Interhemispheric Binding of Ambiguous Visual Motion Is Associated with Changes in Beta Oscillatory Activity but Not with Gamma Range Synchrony

@article{Costa2017InterhemisphericBO,
  title={Interhemispheric Binding of Ambiguous Visual Motion Is Associated with Changes in Beta Oscillatory Activity but Not with Gamma Range Synchrony},
  author={Gabriel Nascimento Costa and Jo{\~a}o Valente Duarte and Ricardo Martins and Michael Wibral and Miguel Castelo‐Branco},
  journal={Journal of Cognitive Neuroscience},
  year={2017},
  volume={29},
  pages={1829-1844}
}
In vision, perceptual features are processed in several regions distributed across the brain. Yet, the brain achieves a coherent perception of visual scenes and objects through integration of these features, which are encoded in spatially segregated brain areas. How the brain seamlessly achieves this accurate integration is currently unknown and is referred to as the “binding problem.” Among the proposed mechanisms meant to resolve the binding problem, the binding-by-synchrony hypothesis… 
Tracking perceptual decision mechanisms through changes in interhemispheric functional connectivity in human visual cortex
TLDR
It is found that perceptual long-range integration of bistable motion can be tracked by changes in interhemispheric functional connectivity between left/right hMT+.
Binding Mechanisms in Visual Perception and Their Link With Neural Oscillations: A Review of Evidence From tACS
TLDR
Overall, the emerging picture seems to support a causal role of brain oscillations in binding processes and, consequently, a certain degree of plasticity for shaping binding mechanisms in visual perception, which, if proved to have long lasting effects, can find applications in different clinical populations.
The dual nature of the BOLD signal: Responses in visual area hMT+ reflect both input properties and perceptual decision
TLDR
The response amplitude of pattern motion domains did not change with grating direction, in contrast to what happened for the component motion domains (consistently with their selective input), but when the relative ratio measures were analyzed they mirrored perceptual interpretation, consistent with the notion that patterns of BOLD responses reflect both sensory input and perceptual read‐out.
Neural oscillations promoting perceptual stability and perceptual memory during bistable perception
TLDR
A transcranial direct-current stimulation study with a double-blind, within-subject cross-over design revealed a unified neurophysiological mechanism sustaining perceptual stability and perceptual memory when the visual system is faced with ambiguous input.
Frequency-based Dissociation of Symbolic and Nonsymbolic Numerical Processing during Numerical Comparison
TLDR
The results confirm the existence of a functional dissociation in EEG oscillatory dynamics during numerical processing that is compatible with the notion of distinct linguistic processing of symbolic numbers and approximation of nonsymbolic numerical information.
The Predictive Values of Changes in Local and Remote Brain Functional Connectivity in Primary Angle-Closure Glaucoma Patients According to Support Vector Machine Analysis
TLDR
This study demonstrated that the primary angle-closure glaucoma patients showed abnormal ReHo value in the cerebellum, visual cortex, and supplementary motor area, which might be reflect the neurological mechanisms underlying vision loss and eye pain in PACG patients.

References

SHOWING 1-10 OF 74 REFERENCES
Gestalt perception is associated with reduced parietal beta oscillations
Interhemispheric integration at different spatial scales: the evidence from EEG coherence and FMRI.
The early visual system processes different spatial frequencies (SFs) separately. To examine where in the brain the scale-specific information is integrated, we mapped the neural assemblies engaged
Transient Interhemispheric Neuronal Synchrony Correlates with Object Recognition
TLDR
There was no interhemispheric coherence when midline objects were not recognized as meaningful or when familiar objects were presented in one visual hemifield, which suggests a close link between site-specific interregional synchronization and object recognition.
Neuronal synchrony does not correlate with motion coherence in cortical area MT
TLDR
Directional tuning and synchrony of area-MT neurons in awake, fixating primates in response to perceptually coherent and non-coherent plaid patterns are examined and it is shown that directional tuning correlated highly with perceptual coherence.
Perception's shadow: long-distance synchronization of human brain activity
TLDR
It is shown for the first time, to the knowledge, that only face perception induces a long-distance pattern of synchronization, corresponding to the moment of perception itself and to the ensuing motor response.
Does Neuronal Synchrony Underlie Visual Feature Grouping?
Visual stimulus-dependent changes in interhemispheric EEG coherence in humans.
TLDR
The finding that visual stimuli cause interhemispheric synchronization, particularly in frequencies of the gamma band, indicates that the synchronization is carried out by cortico-cortical connection and suggests similarities in the organization of visual callosal connections in animals and in man.
...
...